"A popular theory of the origins of the name "White Rhinoceros" is a mistranslation from Dutch to English. The English word "white" in English is said to have been derived by mistranslation of the Dutch word "wijd", which means "wide" in English. The word "wide" refers to the width of the Rhinoceros mouth. So early English-speaking settlers in South Africa misinterpreted the "wijd" for "white" and the rhino with the wide mouth ended up being called the White Rhino and the other one, with the narrow pointed mouth, was called the Black Rhinoceros"(Wikipedia)